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2e0bbbfbf9
The reallocarray function is an extension from OpenBSD. It is an integer-overflow-safe replacement for realloc(p, X*Y) and malloc(X*Y) (realloc(NULL, X*Y)). It can therefore help in preventing certain security issues in code. This is an updated version of a patch originally submitted by Rüdiger Sonderfeld in May 2014 [1]. Checked on i686-linux-gnu and x86_64-linux-gnu. [1] <https://sourceware.org/ml/libc-alpha/2014-05/msg00481.html>. 2017-05-30 Dennis Wölfing <denniswoelfing@gmx.de> Rüdiger Sonderfeld <ruediger@c-plusplus.de> * include/stdlib.h (__libc_reallocarray): New declaration. * malloc/Makefile (routines): Add reallocarray. (tests): Add tst-reallocarray.c. * malloc/Versions: Add reallocarray and __libc_reallocarray. * malloc/malloc-internal.h (check_mul_overflow_size_t): New inline function. * malloc/malloc.h (reallocarray): New declaration. * stdlib/stdlib.h (reallocarray): Likewise. * malloc/reallocarray.c: New file. * malloc/tst-reallocarray.c: New test file. * manual/memory.texi: Document reallocarray. * sysdeps/unix/sysv/linux/aarch64/libc.abilist: Add reallocarray. * sysdeps/unix/sysv/linux/alpha/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/arm/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/hppa/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/i386/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/ia64/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/m68k/coldfire/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/m68k/m680x0/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/microblaze/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/mips/mips32/fpu/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/mips/mips32/nofpu/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/mips/mips64/n32/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/mips/mips64/n64/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/nios2/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc64/libc-le.abilist: Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc64/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/sh/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/sparc/sparc64/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/tile/tilegx/tilegx32/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/tile/tilegx/tilegx64/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/tilepro/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/x86_64/64/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/x86_64/x32/libc.abilist: Likewise. |
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.. | ||
bits | ||
sys | ||
____longjmp_chk.S | ||
__ia64_longjmp.S | ||
__longjmp.S | ||
__sigstack_longjmp.c | ||
__start_context.S | ||
arch-fork.h | ||
brk.S | ||
bsd-_setjmp.S | ||
bsd-setjmp.S | ||
c++-types.data | ||
clone2.S | ||
clone.S | ||
configure | ||
configure.ac | ||
dl-brk.S | ||
dl-cache.h | ||
dl-static.c | ||
dl-sysdep.h | ||
get_clockfreq.c | ||
getclktck.c | ||
getcontext.S | ||
has_cpuclock.c | ||
Implies | ||
ioperm.c | ||
kernel_stat.h | ||
kernel-features.h | ||
ld.abilist | ||
ldconfig.h | ||
ldd-rewrite.sed | ||
ldsodefs.h | ||
libanl.abilist | ||
libBrokenLocale.abilist | ||
libc.abilist | ||
libcrypt.abilist | ||
libdl.abilist | ||
libm.abilist | ||
libnsl.abilist | ||
libpthread.abilist | ||
libresolv.abilist | ||
librt.abilist | ||
libthread_db.abilist | ||
libutil.abilist | ||
localplt.data | ||
makecontext.c | ||
Makefile | ||
pipe.S | ||
profil-counter.h | ||
pt-vfork.S | ||
readelflib.c | ||
register-dump.h | ||
rt-sysdep.S | ||
setcontext.S | ||
setjmp.S | ||
shlib-versions | ||
sigaction.c | ||
sigaltstack-offsets.sym | ||
sigcontext-offsets.sym | ||
sigcontextinfo.h | ||
sigpending.c | ||
sigprocmask.c | ||
swapcontext.c | ||
syscall.S | ||
syscalls.list | ||
sysconf.c | ||
sysdep-cancel.h | ||
sysdep.h | ||
sysdep.S | ||
system.c | ||
timer_create.c | ||
timer_delete.c | ||
timer_getoverr.c | ||
timer_gettime.c | ||
timer_settime.c | ||
tst-setcontext2.c | ||
ucontext_i.h | ||
umount.c | ||
unwind_longjmp.c | ||
unwind-dw2-fde.c | ||
unwind-forcedunwind.c | ||
Versions | ||
vfork.S | ||
wordexp.c |